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PivotalLabsAndSamples/student-lab-instructions/14-spring-boot-extending.html

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  573. <body class="article toc2 toc-left">

  574. <div id="header">

  575. <h1><a id="spring-boot-security"></a>Spring Boot - Creating a Custom Spring Boot Starter</h1>

  576. <div id="toc" class="toc2">

  577. <div id="toctitle">Labs</div>

  578. <ul class="sectlevel1">

  579. <li><a href="#_spring_boot_starter">Spring Boot Starter</a></li>

  580. <li><a href="#_project_structure">Project Structure</a></li>

  581. <li><a href="#_directory_web_client_spring_boot_starter">Directory Web Client Spring Boot Starter</a></li>

  582. <li><a href="#_directory_web_client_spring_boot_autoconfigure">Directory Web Client Spring Boot Autoconfigure</a></li>

  583. <li><a href="#_demo_starter">Demo Starter</a>

  584. <ul class="sectlevel2">

  585. <li><a href="#_testing_the_strong_directorywebclient_strong_bean">Testing the <strong>DirectoryWebClient</strong> bean</a></li>

  586. <li><a href="#_testing_the_strong_enabledirectorywebclientutils_strong_annotation">Testing the <strong>@EnableDirectoryWebClientUtils</strong> annotation.</a></li>

  587. </ul>

  588. </li>

  589. <li><a href="#_challenges">Challenges</a></li>

  590. <li><a href="#_homework">HOMEWORK</a></li>

  591. </ul>

  592. </div>

  593. </div>

  594. <div id="content">

  595. <div id="preamble">

  596. <div class="sectionbody">

  597. <div class="paragraph">

  598. <p>You will create a custom <strong>Spring Boot Starter</strong> using the <strong>auto-configuration</strong> features.</p>

  599. </div>

  600. <div class="paragraph">

  601. <p><strong>Time:</strong> 30 minutes.</p>

  602. </div>

  603. <!-- toc disabled -->

  604. </div>

  605. </div>

  606. <div class="sect1">

  607. <h2 id="_spring_boot_starter">Spring Boot Starter</h2>

  608. <div class="sectionbody">

  609. <div class="paragraph">

  610. <p>We are going create custom <strong>Spring Boot Starter</strong>. This starter will be a reusable client for the <strong>directory-web-security</strong> project. It will have the following features:</p>

  611. </div>

  612. <div class="ulist">

  613. <ul>

  614. <li>

  615. <p><strong>DirectoryWebClient</strong> bean that will have access to the persons in the directory. You will add a new person or list all the persons.</p>

  616. </li>

  617. <li>

  618. <p><strong>@EnableDirectoryWebClientUtils</strong> annotation that will bring a <strong>DirectoryWebClientUtils</strong> that will expose password encode using either <strong>BCRYPT</strong> (default) or <strong>PBKDF2</strong> algorthims.</p>

  619. </li>

  620. </ul>

  621. </div>

  622. </div>

  623. </div>

  624. <div class="sect1">

  625. <h2 id="_project_structure">Project Structure</h2>

  626. <div class="sectionbody">

  627. <div class="olist arabic">

  628. <ol class="arabic">

  629. <li>

  630. <p>Create a directory structure where we are going to place 3 apps:</p>

  631. <div class="ulist">

  632. <ul>

  633. <li>

  634. <p>demo-starter</p>

  635. </li>

  636. <li>

  637. <p>directory-web-client-spring-boot-autoconfigure</p>

  638. </li>

  639. <li>

  640. <p>directory-web-client-spring-boot-starter</p>

  641. <div class="listingblock">

  642. <div class="content">

  643. <pre class="CodeRay highlight"><code data-lang="bash">mkdir -p workspace/demo-starter workspace/directory-web-client-spring-boot-autoconfigure workspace/directory-web-client-spring-boot-starter</code></pre>

  644. </div>

  645. </div>

  646. </li>

  647. </ul>

  648. </div>

  649. </li>

  650. <li>

  651. <p>In the <strong>workspace</strong> directory add the following <strong>pom.xml</strong>. This will hold all the module information and the general dependencies.</p>

  652. <div class="listingblock">

  653. <div class="content">

  654. <pre class="CodeRay highlight"><code data-lang="xml"><span class="preprocessor">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;</span>

  655. <span class="tag">&lt;project</span> <span class="attribute-name">xmlns</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://maven.apache.org/POM/4.0.0</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">xmlns:xsi</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://www.w3.org/2001/XMLSchema-instance</span><span class="delimiter">&quot;</span></span>

  656.                  <span class="attribute-name">xsi:schemaLocation</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>

  657.         <span class="tag">&lt;modelVersion&gt;</span>4.0.0<span class="tag">&lt;/modelVersion&gt;</span>

  658.         <span class="tag">&lt;groupId&gt;</span>io.pivotal.workshop<span class="tag">&lt;/groupId&gt;</span>

  659.         <span class="tag">&lt;artifactId&gt;</span>directory-web-client<span class="tag">&lt;/artifactId&gt;</span>

  660.         <span class="tag">&lt;version&gt;</span>0.0.1-SNAPSHOT<span class="tag">&lt;/version&gt;</span>

  661.         <span class="tag">&lt;packaging&gt;</span>pom<span class="tag">&lt;/packaging&gt;</span>

  662.         <span class="tag">&lt;name&gt;</span>directory-web-client<span class="tag">&lt;/name&gt;</span>

  663. 

  664.         <span class="tag">&lt;modules&gt;</span>

  665.                 <span class="tag">&lt;module&gt;</span>directory-web-client-spring-boot-autoconfigure<span class="tag">&lt;/module&gt;</span>

  666.                 <span class="tag">&lt;module&gt;</span>directory-web-client-spring-boot-starter<span class="tag">&lt;/module&gt;</span>

  667.                 <span class="tag">&lt;module&gt;</span>demo-starter<span class="tag">&lt;/module&gt;</span>

  668.         <span class="tag">&lt;/modules&gt;</span>

  669. 

  670. 

  671. 

  672.         <span class="tag">&lt;dependencyManagement&gt;</span>

  673.                 <span class="tag">&lt;dependencies&gt;</span>

  674.                         <span class="tag">&lt;dependency&gt;</span>

  675.                                 <span class="tag">&lt;groupId&gt;</span>org.springframework.boot<span class="tag">&lt;/groupId&gt;</span>

  676.                                 <span class="tag">&lt;artifactId&gt;</span>spring-boot-dependencies<span class="tag">&lt;/artifactId&gt;</span>

  677.                                 <span class="tag">&lt;version&gt;</span>2.0.0.M7<span class="tag">&lt;/version&gt;</span>

  678.                                 <span class="tag">&lt;type&gt;</span>pom<span class="tag">&lt;/type&gt;</span>

  679.                                 <span class="tag">&lt;scope&gt;</span>import<span class="tag">&lt;/scope&gt;</span>

  680.                         <span class="tag">&lt;/dependency&gt;</span>

  681.                 <span class="tag">&lt;/dependencies&gt;</span>

  682.         <span class="tag">&lt;/dependencyManagement&gt;</span>

  683. 

  684. 

  685.     <span class="tag">&lt;repositories&gt;</span>

  686.         <span class="tag">&lt;repository&gt;</span>

  687.             <span class="tag">&lt;id&gt;</span>spring-snapshots<span class="tag">&lt;/id&gt;</span>

  688.             <span class="tag">&lt;name&gt;</span>Spring Snapshots<span class="tag">&lt;/name&gt;</span>

  689.             <span class="tag">&lt;url&gt;</span>https://repo.spring.io/snapshot<span class="tag">&lt;/url&gt;</span>

  690.             <span class="tag">&lt;snapshots&gt;</span>

  691.                 <span class="tag">&lt;enabled&gt;</span>true<span class="tag">&lt;/enabled&gt;</span>

  692.             <span class="tag">&lt;/snapshots&gt;</span>

  693.         <span class="tag">&lt;/repository&gt;</span>

  694.         <span class="tag">&lt;repository&gt;</span>

  695.             <span class="tag">&lt;id&gt;</span>spring-milestones<span class="tag">&lt;/id&gt;</span>

  696.             <span class="tag">&lt;name&gt;</span>Spring Milestones<span class="tag">&lt;/name&gt;</span>

  697.             <span class="tag">&lt;url&gt;</span>https://repo.spring.io/milestone<span class="tag">&lt;/url&gt;</span>

  698.             <span class="tag">&lt;snapshots&gt;</span>

  699.                 <span class="tag">&lt;enabled&gt;</span>false<span class="tag">&lt;/enabled&gt;</span>

  700.             <span class="tag">&lt;/snapshots&gt;</span>

  701.         <span class="tag">&lt;/repository&gt;</span>

  702.     <span class="tag">&lt;/repositories&gt;</span>

  703. 

  704.     <span class="tag">&lt;pluginRepositories&gt;</span>

  705.         <span class="tag">&lt;pluginRepository&gt;</span>

  706.             <span class="tag">&lt;id&gt;</span>spring-snapshots<span class="tag">&lt;/id&gt;</span>

  707.             <span class="tag">&lt;name&gt;</span>Spring Snapshots<span class="tag">&lt;/name&gt;</span>

  708.             <span class="tag">&lt;url&gt;</span>https://repo.spring.io/snapshot<span class="tag">&lt;/url&gt;</span>

  709.             <span class="tag">&lt;snapshots&gt;</span>

  710.                 <span class="tag">&lt;enabled&gt;</span>true<span class="tag">&lt;/enabled&gt;</span>

  711.             <span class="tag">&lt;/snapshots&gt;</span>

  712.         <span class="tag">&lt;/pluginRepository&gt;</span>

  713.         <span class="tag">&lt;pluginRepository&gt;</span>

  714.             <span class="tag">&lt;id&gt;</span>spring-milestones<span class="tag">&lt;/id&gt;</span>

  715.             <span class="tag">&lt;name&gt;</span>Spring Milestones<span class="tag">&lt;/name&gt;</span>

  716.             <span class="tag">&lt;url&gt;</span>https://repo.spring.io/milestone<span class="tag">&lt;/url&gt;</span>

  717.             <span class="tag">&lt;snapshots&gt;</span>

  718.                 <span class="tag">&lt;enabled&gt;</span>false<span class="tag">&lt;/enabled&gt;</span>

  719.             <span class="tag">&lt;/snapshots&gt;</span>

  720.         <span class="tag">&lt;/pluginRepository&gt;</span>

  721.     <span class="tag">&lt;/pluginRepositories&gt;</span>

  722. 

  723. 

  724. <span class="tag">&lt;/project&gt;</span></code></pre>

  725. </div>

  726. </div>

  727. <div class="paragraph">

  728. <p>As you can see it has the main dependency right now <strong>spring-boot-dependencies:2.0.0.M6</strong> and is a <strong>pom</strong> import. It defines our 3 modules.</p>

  729. </div>

  730. </li>

  731. </ol>

  732. </div>

  733. </div>

  734. </div>

  735. <div class="sect1">

  736. <h2 id="_directory_web_client_spring_boot_starter">Directory Web Client Spring Boot Starter</h2>

  737. <div class="sectionbody">

  738. <div class="paragraph">

  739. <p>It&#8217;s a good idea to create custom starter by leaving at the end the keywords <strong>*-spring-boot-starter</strong> and at the beginning the technology that you are going to build.</p>

  740. </div>

  741. <div class="olist arabic">

  742. <ol class="arabic">

  743. <li>

  744. <p>In the directory <strong>workspace/directory-web-client-spring-boot-starter</strong> add the following <strong>pom.xml</strong> file:</p>

  745. <div class="listingblock">

  746. <div class="content">

  747. <pre class="CodeRay highlight"><code data-lang="xml"><span class="preprocessor">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;</span>

  748. <span class="tag">&lt;project</span> <span class="attribute-name">xmlns</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://maven.apache.org/POM/4.0.0</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">xmlns:xsi</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://www.w3.org/2001/XMLSchema-instance</span><span class="delimiter">&quot;</span></span>

  749.                  <span class="attribute-name">xsi:schemaLocation</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>

  750.         <span class="tag">&lt;modelVersion&gt;</span>4.0.0<span class="tag">&lt;/modelVersion&gt;</span>

  751.         <span class="tag">&lt;groupId&gt;</span>io.pivotal.workshop<span class="tag">&lt;/groupId&gt;</span>

  752.         <span class="tag">&lt;artifactId&gt;</span>directory-web-client-spring-boot-starter<span class="tag">&lt;/artifactId&gt;</span>

  753.         <span class="tag">&lt;version&gt;</span>0.0.1-SNAPSHOT<span class="tag">&lt;/version&gt;</span>

  754.         <span class="tag">&lt;packaging&gt;</span>jar<span class="tag">&lt;/packaging&gt;</span>

  755. 

  756.         <span class="tag">&lt;name&gt;</span>directory-web-client-spring-boot-starter<span class="tag">&lt;/name&gt;</span>

  757.         <span class="tag">&lt;description&gt;</span>Demo project for Spring Boot<span class="tag">&lt;/description&gt;</span>

  758. 

  759.         <span class="tag">&lt;properties&gt;</span>

  760.                 <span class="tag">&lt;project.build.sourceEncoding&gt;</span>UTF-8<span class="tag">&lt;/project.build.sourceEncoding&gt;</span>

  761.                 <span class="tag">&lt;project.reporting.outputEncoding&gt;</span>UTF-8<span class="tag">&lt;/project.reporting.outputEncoding&gt;</span>

  762.         <span class="tag">&lt;/properties&gt;</span>

  763. 

  764.     <span class="tag">&lt;parent&gt;</span>  <span class="comment">&lt;!-- &lt;1&gt; --&gt;</span>

  765.         <span class="tag">&lt;groupId&gt;</span>io.pivotal.workshop<span class="tag">&lt;/groupId&gt;</span>

  766.         <span class="tag">&lt;artifactId&gt;</span>directory-web-client<span class="tag">&lt;/artifactId&gt;</span>

  767.         <span class="tag">&lt;version&gt;</span>0.0.1-SNAPSHOT<span class="tag">&lt;/version&gt;</span>

  768.         <span class="tag">&lt;relativePath&gt;</span>..<span class="tag">&lt;/relativePath&gt;</span>

  769.     <span class="tag">&lt;/parent&gt;</span>

  770. 

  771.         <span class="tag">&lt;dependencies&gt;</span>

  772.                 <span class="tag">&lt;dependency&gt;</span>

  773.                         <span class="tag">&lt;groupId&gt;</span>io.pivotal.workshop<span class="tag">&lt;/groupId&gt;</span>   <span class="comment">&lt;!-- &lt;2&gt; --&gt;</span>

  774.                         <span class="tag">&lt;artifactId&gt;</span>directory-web-client-spring-boot-autoconfigure<span class="tag">&lt;/artifactId&gt;</span>

  775.                         <span class="tag">&lt;version&gt;</span>0.0.1-SNAPSHOT<span class="tag">&lt;/version&gt;</span>

  776.                 <span class="tag">&lt;/dependency&gt;</span>

  777.         <span class="tag">&lt;/dependencies&gt;</span>

  778. 

  779. 

  780. 

  781. <span class="tag">&lt;/project&gt;</span></code></pre>

  782. </div>

  783. </div>

  784. <div class="colist arabic">

  785. <ol>

  786. <li>

  787. <p>See that we are using our parent pom.</p>

  788. </li>

  789. <li>

  790. <p>We are adding our <strong>auto-configuration</strong> app.</p>

  791. </li>

  792. </ol>

  793. </div>

  794. <div class="paragraph">

  795. <p>Thats it, the <strong>spring-boot-starter</strong> is just a <strong>pom.xml</strong> file that declares the <strong>auto-configuration</strong> dependency.</p>

  796. </div>

  797. </li>

  798. </ol>

  799. </div>

  800. </div>

  801. </div>

  802. <div class="sect1">

  803. <h2 id="_directory_web_client_spring_boot_autoconfigure">Directory Web Client Spring Boot Autoconfigure</h2>

  804. <div class="sectionbody">

  805. <div class="paragraph">

  806. <p>This project will have all the logic to be a reusable component in any project.</p>

  807. </div>

  808. <div class="olist arabic">

  809. <ol class="arabic">

  810. <li>

  811. <p>Open a browser and hit the url: <a href="http://start.spring.io" class="bare" target="_blank">http://start.spring.io</a></p>

  812. </li>

  813. <li>

  814. <p>Click the <strong><em>Switch to the full version</em></strong> link.</p>

  815. </li>

  816. <li>

  817. <p>Fill out the Directory Web Client Spring Boot Autoconfigure Project metadata with (See Figure 1.0):</p>

  818. <table class="tableblock frame-all grid-all spread">

  819. <caption class="title">Table 1. Directory Web Client Spring Boot Autoconfigure - metadata</caption>

  820. <colgroup>

  821. <col style="width: 16.6666%;">

  822. <col style="width: 83.3334%;">

  823. </colgroup>

  824. <thead>

  825. <tr>

  826. <th class="tableblock halign-left valign-top">Property</th>

  827. <th class="tableblock halign-left valign-top">Value</th>

  828. </tr>

  829. </thead>

  830. <tbody>

  831. <tr>

  832. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Group</strong>:</p></td>

  833. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>io.pivotal.workshop</em></p></td>

  834. </tr>

  835. <tr>

  836. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Artifact</strong>:</p></td>

  837. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>directory-web-client-spring-boot-autoconfigure</em></p></td>

  838. </tr>

  839. <tr>

  840. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Name</strong>:</p></td>

  841. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>directory-web-client-spring-boot-autoconfigure</em></p></td>

  842. </tr>

  843. <tr>

  844. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Package Name</strong>:</p></td>

  845. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>io.pivotal.workshop.directory</em></p></td>

  846. </tr>

  847. <tr>

  848. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Dependencies</strong>:</p></td>

  849. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>Web</em>, <em>HATEOAS</em>, <em>Security</em>, <em>Lombok</em>, <em>Configuration Processor</em></p></td>

  850. </tr>

  851. <tr>

  852. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Project Type</strong>:</p></td>

  853. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>Maven</em></p></td>

  854. </tr>

  855. <tr>

  856. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Spring Boot</strong>:</p></td>

  857. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>2.0.0.M7</em></p></td>

  858. </tr>

  859. </tbody>

  860. </table>

  861. <div class="paragraph">

  862. <div class="title">Figure 1.0: Spring Initializr - <a href="http://start.spring.io" class="bare" target="_blank">http://start.spring.io</a></div>

  863. <p><span class="image"><img src="images/14-spring-boot-extending-01.png" alt="SpringInitializr" title="Spring Initializr"></span></p>

  864. </div>

  865. </li>

  866. <li>

  867. <p>Type <strong>Web</strong>, <strong>HATEOAS</strong>, <strong>Security</strong>, <strong>Lombok</strong> and <strong>Configuration Processor</strong> in the <strong><em>Dependencies</em></strong> field and press Enter.</p>

  868. </li>

  869. <li>

  870. <p>Click the <strong><em>Generate Project</em></strong> button.</p>

  871. </li>

  872. <li>

  873. <p><strong>IMPORTANT</strong> Unzip the file in any directory you want and <strong>COPY the content</strong> in the <strong>workspace/directory-web-client-spring-boot-autoconfigure</strong> directory.</p>

  874. </li>

  875. <li>

  876. <p>Import your project in any IDE you want.</p>

  877. </li>

  878. <li>

  879. <p>Modify the <strong>pom.xml</strong> and make sure it looks like this:</p>

  880. <div class="listingblock">

  881. <div class="content">

  882. <pre class="CodeRay highlight"><code data-lang="xml"><span class="preprocessor">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;</span>

  883. <span class="tag">&lt;project</span> <span class="attribute-name">xmlns</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://maven.apache.org/POM/4.0.0</span><span class="delimiter">&quot;</span></span> <span class="attribute-name">xmlns:xsi</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://www.w3.org/2001/XMLSchema-instance</span><span class="delimiter">&quot;</span></span>

  884.         <span class="attribute-name">xsi:schemaLocation</span>=<span class="string"><span class="delimiter">&quot;</span><span class="content">http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd</span><span class="delimiter">&quot;</span></span><span class="tag">&gt;</span>

  885.         <span class="tag">&lt;modelVersion&gt;</span>4.0.0<span class="tag">&lt;/modelVersion&gt;</span>

  886. 

  887.         <span class="tag">&lt;groupId&gt;</span>io.pivotal.workshop<span class="tag">&lt;/groupId&gt;</span>

  888.         <span class="tag">&lt;artifactId&gt;</span>directory-web-client-spring-boot-autoconfigure<span class="tag">&lt;/artifactId&gt;</span>

  889.         <span class="tag">&lt;version&gt;</span>0.0.1-SNAPSHOT<span class="tag">&lt;/version&gt;</span>

  890.         <span class="tag">&lt;packaging&gt;</span>jar<span class="tag">&lt;/packaging&gt;</span>

  891. 

  892.         <span class="tag">&lt;name&gt;</span>directory-web-client-spring-boot-autoconfigure<span class="tag">&lt;/name&gt;</span>

  893.         <span class="tag">&lt;description&gt;</span>Demo project for Spring Boot<span class="tag">&lt;/description&gt;</span>

  894. 

  895.         <span class="tag">&lt;properties&gt;</span>

  896.                 <span class="tag">&lt;project.build.sourceEncoding&gt;</span>UTF-8<span class="tag">&lt;/project.build.sourceEncoding&gt;</span>

  897.                 <span class="tag">&lt;project.reporting.outputEncoding&gt;</span>UTF-8<span class="tag">&lt;/project.reporting.outputEncoding&gt;</span>

  898.                 <span class="tag">&lt;java.version&gt;</span>1.8<span class="tag">&lt;/java.version&gt;</span>

  899.         <span class="tag">&lt;/properties&gt;</span>

  900. 

  901.     <span class="tag">&lt;parent&gt;</span>

  902.         <span class="tag">&lt;groupId&gt;</span>io.pivotal.workshop<span class="tag">&lt;/groupId&gt;</span>

  903.         <span class="tag">&lt;artifactId&gt;</span>directory-web-client<span class="tag">&lt;/artifactId&gt;</span>

  904.         <span class="tag">&lt;version&gt;</span>0.0.1-SNAPSHOT<span class="tag">&lt;/version&gt;</span>

  905.         <span class="tag">&lt;relativePath&gt;</span>..<span class="tag">&lt;/relativePath&gt;</span>

  906.     <span class="tag">&lt;/parent&gt;</span>

  907. 

  908.         <span class="tag">&lt;dependencies&gt;</span>

  909. 

  910.                 <span class="tag">&lt;dependency&gt;</span>

  911.                         <span class="tag">&lt;groupId&gt;</span>org.projectlombok<span class="tag">&lt;/groupId&gt;</span>

  912.                         <span class="tag">&lt;artifactId&gt;</span>lombok<span class="tag">&lt;/artifactId&gt;</span>

  913.                 <span class="tag">&lt;/dependency&gt;</span>

  914.                 <span class="tag">&lt;dependency&gt;</span>

  915.                         <span class="tag">&lt;groupId&gt;</span>org.springframework.boot<span class="tag">&lt;/groupId&gt;</span>

  916.                         <span class="tag">&lt;artifactId&gt;</span>spring-boot-starter-security<span class="tag">&lt;/artifactId&gt;</span>

  917.                 <span class="tag">&lt;/dependency&gt;</span>

  918. 

  919.                 <span class="tag">&lt;dependency&gt;</span>

  920.                         <span class="tag">&lt;groupId&gt;</span>org.springframework.hateoas<span class="tag">&lt;/groupId&gt;</span>

  921.                         <span class="tag">&lt;artifactId&gt;</span>spring-hateoas<span class="tag">&lt;/artifactId&gt;</span>

  922.                 <span class="tag">&lt;/dependency&gt;</span>

  923. 

  924.                 <span class="tag">&lt;dependency&gt;</span>

  925.                         <span class="tag">&lt;groupId&gt;</span>org.springframework.boot<span class="tag">&lt;/groupId&gt;</span>

  926.                         <span class="tag">&lt;artifactId&gt;</span>spring-boot-starter-web<span class="tag">&lt;/artifactId&gt;</span>

  927.                 <span class="tag">&lt;/dependency&gt;</span>

  928. 

  929. 

  930.                 <span class="tag">&lt;dependency&gt;</span>

  931.                         <span class="tag">&lt;groupId&gt;</span>org.springframework.boot<span class="tag">&lt;/groupId&gt;</span>

  932.                         <span class="tag">&lt;artifactId&gt;</span>spring-boot-starter-test<span class="tag">&lt;/artifactId&gt;</span>

  933.                         <span class="tag">&lt;scope&gt;</span>test<span class="tag">&lt;/scope&gt;</span>

  934.                 <span class="tag">&lt;/dependency&gt;</span>

  935.                 <span class="tag">&lt;dependency&gt;</span>

  936.                         <span class="tag">&lt;groupId&gt;</span>org.springframework.security<span class="tag">&lt;/groupId&gt;</span>

  937.                         <span class="tag">&lt;artifactId&gt;</span>spring-security-test<span class="tag">&lt;/artifactId&gt;</span>

  938.                         <span class="tag">&lt;scope&gt;</span>test<span class="tag">&lt;/scope&gt;</span>

  939.                 <span class="tag">&lt;/dependency&gt;</span>

  940. 

  941.                 <span class="tag">&lt;dependency&gt;</span>

  942.                         <span class="tag">&lt;groupId&gt;</span>org.springframework.boot<span class="tag">&lt;/groupId&gt;</span>

  943.                         <span class="tag">&lt;artifactId&gt;</span>spring-boot-configuration-processor<span class="tag">&lt;/artifactId&gt;</span>

  944.                         <span class="tag">&lt;optional&gt;</span>true<span class="tag">&lt;/optional&gt;</span>

  945.                 <span class="tag">&lt;/dependency&gt;</span>

  946. 

  947. 

  948. 

  949.         <span class="tag">&lt;/dependencies&gt;</span>

  950. 

  951. 

  952. <span class="tag">&lt;/project&gt;</span></code></pre>

  953. </div>

  954. </div>

  955. </li>

  956. <li>

  957. <p>Let&#8217;s start by telling <strong>Spring Boot</strong> where to go for the <strong>auto-configuration</strong>. Create in the <strong>src/main/resources</strong> directory, a new folder named: <strong>META-INF</strong> and inside this folder a file named: <strong>spring.factories</strong> with the following content:</p>

  958. <div class="listingblock">

  959. <div class="title">src/main/resources/META-INF/spring.factories</div>

  960. <div class="content">

  961. <pre class="CodeRay highlight"><code data-lang="properties">org.springframework.boot.autoconfigure.EnableAutoConfiguration=io.pivotal.workshop.directory.configuration.DirectoryWebClientAutoConfiguration</code></pre>

  962. </div>

  963. </div>

  964. <div class="paragraph">

  965. <p>Here we are declaring the class that will do the <strong>auto-configuration</strong>, in this case the <strong>io.pivotal.workshop.directory.configuration.DirectoryWebClientAutoConfiguration</strong> class.</p>

  966. </div>

  967. </li>

  968. <li>

  969. <p>Next let&#8217;s create the <strong>io.pivotal.workshop.directory.configuration.DirectoryWebClientAutoConfiguration</strong> class:</p>

  970. <div class="listingblock">

  971. <div class="title">src/main/java/io/pivotal/workshop/directory/configuration/DirectoryWebClientAutoConfiguration.java</div>

  972. <div class="content">

  973. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.configuration</span>;

  974. 

  975. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.client.DirectoryWebClient</span>;

  976. <span class="keyword">import</span> <span class="include">org.slf4j.Logger</span>;

  977. <span class="keyword">import</span> <span class="include">org.slf4j.LoggerFactory</span>;

  978. <span class="keyword">import</span> <span class="include">org.springframework.boot.autoconfigure.condition.ConditionalOnClass</span>;

  979. <span class="keyword">import</span> <span class="include">org.springframework.boot.context.properties.EnableConfigurationProperties</span>;

  980. <span class="keyword">import</span> <span class="include">org.springframework.boot.web.client.RestTemplateBuilder</span>;

  981. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.Bean</span>;

  982. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.Configuration</span>;

  983. <span class="keyword">import</span> <span class="include">org.springframework.hateoas.Resource</span>;

  984. <span class="keyword">import</span> <span class="include">org.springframework.web.client.RestTemplate</span>;

  985. 

  986. <span class="comment">//</span><b class="conum">(1)</b>

  987. <span class="annotation">@Configuration</span>

  988. <span class="annotation">@ConditionalOnClass</span>({Resource.class,RestTemplateBuilder.class})

  989. <span class="annotation">@EnableConfigurationProperties</span>(DirectoryWebClientProperties.class)

  990. <span class="directive">public</span> <span class="type">class</span> <span class="class">DirectoryWebClientAutoConfiguration</span> {

  991. 

  992.     <span class="directive">private</span> <span class="directive">final</span> <span class="predefined-type">Logger</span> log = LoggerFactory.getLogger(DirectoryWebClientAutoConfiguration.class);

  993.     <span class="directive">private</span> DirectoryWebClientProperties webClientProperties;

  994.     <span class="directive">private</span> RestTemplateBuilder restTemplateBuilder;

  995. 

  996.     <span class="comment">//</span><b class="conum">(2)</b>

  997.     <span class="directive">public</span> DirectoryWebClientAutoConfiguration(DirectoryWebClientProperties webClientProperties, RestTemplateBuilder restTemplateBuilder) {

  998.         <span class="local-variable">this</span>.webClientProperties = webClientProperties;

  999.         <span class="local-variable">this</span>.restTemplateBuilder = restTemplateBuilder;

  1000.     }

  1001. 

  1002.     <span class="comment">//</span><b class="conum">(3)</b>

  1003.     <span class="annotation">@Bean</span>

  1004.     <span class="directive">public</span> DirectoryWebClient directoryClient(){

  1005.         log.info(<span class="string"><span class="delimiter">&quot;</span><span class="content">Creating a Directory Web Client...</span><span class="delimiter">&quot;</span></span>);

  1006.         <span class="keyword">return</span> <span class="keyword">new</span> DirectoryWebClient(restTemplate(),<span class="local-variable">this</span>.webClientProperties);

  1007.     }

  1008. 

  1009. 

  1010.     <span class="comment">//</span><b class="conum">(4)</b>

  1011.     <span class="annotation">@Bean</span>

  1012.     <span class="directive">public</span> RestTemplate restTemplate(){

  1013.         <span class="comment">// Make sure the directory-web-security has the httpBasic() security enabled and NOT the formLogin()</span>

  1014.         log.info(<span class="string"><span class="delimiter">&quot;</span><span class="content">Setting up admin credentials for Directory Web Client ...</span><span class="delimiter">&quot;</span></span>);

  1015.         <span class="keyword">return</span> <span class="local-variable">this</span>.restTemplateBuilder.basicAuthorization(webClientProperties.getUsername(),webClientProperties.getPassword()).build();

  1016.     }

  1017. 

  1018. 

  1019. }</code></pre>

  1020. </div>

  1021. </div>

  1022. <div class="colist arabic">

  1023. <ol>

  1024. <li>

  1025. <p>This class is annotated with the <strong>@ConditionalOnClass</strong> that checks if in the classpath is the <strong>Resource</strong> and the <strong>RestTemplateBuilder</strong> classes, and if they do, then it will configure all the beans declared in this class.</p>

  1026. </li>

  1027. <li>

  1028. <p>The constructor injects the <strong>DirectoryWebClientProperties</strong> and the <strong>RestTemplateBuilder</strong>. The <strong>DirectoryWebClientProperties</strong> will bring the username and password (the admin credentials for the <strong><em>directory-web-security</em></strong> app.), and the <strong>RestTemplateBuilder</strong> will create the <strong>RestTemplate</strong> instance, needed for do all the rest operations.</p>

  1029. </li>

  1030. <li>

  1031. <p>The <strong>directoryClient</strong> is the one created to do all the rest operations over the <strong>directory-web-security</strong> app endpoints.</p>

  1032. </li>

  1033. <li>

  1034. <p>This is the <strong>RestTeamplate</strong> that holds the <strong>administrator</strong> credentials so it can do all the <strong>Rest</strong> operations.</p>

  1035. </li>

  1036. </ol>

  1037. </div>

  1038. <div class="admonitionblock tip">

  1039. <table>

  1040. <tr>

  1041. <td class="icon">

  1042. <div class="title">Tip</div>

  1043. </td>

  1044. <td class="content">

  1045. Is important to make sure the <strong><em>directory-web-security</em></strong> has the <strong><em>httpBasic()</em></strong> security enabled and <strong>NOT</strong> the <strong><em>formLogin()</em></strong>

  1046. </td>

  1047. </tr>

  1048. </table>

  1049. </div>

  1050. </li>

  1051. <li>

  1052. <p>Create the <strong>io.pivotal.workshop.directory.configuration.DirectoryWebClientProperties</strong> class. This class will have the admin credentials and the uri of the <strong>directory-web-security</strong> app.:</p>

  1053. <div class="listingblock">

  1054. <div class="title">src/main/java/io/pivotal/workshop/directory/configuration/DirectoryWebClientProperties.java</div>

  1055. <div class="content">

  1056. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.configuration</span>;

  1057. 

  1058. <span class="keyword">import</span> <span class="include">lombok.Data</span>;

  1059. <span class="keyword">import</span> <span class="include">org.springframework.boot.context.properties.ConfigurationProperties</span>;

  1060. 

  1061. <span class="keyword">import</span> <span class="include">java.util.Arrays</span>;

  1062. <span class="keyword">import</span> <span class="include">java.util.List</span>;

  1063. 

  1064. <span class="annotation">@Data</span>

  1065. <span class="annotation">@ConfigurationProperties</span>(prefix = <span class="string"><span class="delimiter">&quot;</span><span class="content">directory.web.client</span><span class="delimiter">&quot;</span></span>)

  1066. <span class="directive">public</span> <span class="type">class</span> <span class="class">DirectoryWebClientProperties</span> {

  1067. 

  1068.     <span class="predefined-type">String</span> username = <span class="string"><span class="delimiter">&quot;</span><span class="content">admin</span><span class="delimiter">&quot;</span></span>;

  1069.     <span class="predefined-type">String</span> password = <span class="string"><span class="delimiter">&quot;</span><span class="content">admin</span><span class="delimiter">&quot;</span></span>;

  1070.     <span class="predefined-type">String</span> uri = <span class="string"><span class="delimiter">&quot;</span><span class="content">http://localhost:8585/api/persons</span><span class="delimiter">&quot;</span></span>;

  1071. 

  1072. }</code></pre>

  1073. </div>

  1074. </div>

  1075. <div class="paragraph">

  1076. <p>See that we are using the <strong>Lombok</strong> library (with the <strong>@Data</strong> annotation)so it can generate the setters and getters from the fields.</p>

  1077. </div>

  1078. </li>

  1079. <li>

  1080. <p>Next, let&#8217;s create the actual <strong>DirectoryWebClient</strong> class that will do all the <strong>Rest</strong> operations. Create the <strong>io.pivotal.workshop.directory.client.DirectoryWebClient</strong> class:</p>

  1081. <div class="listingblock">

  1082. <div class="title">src/main/java/io/pivotal/workshop/directory/client/DirectoryWebClient.java</div>

  1083. <div class="content">

  1084. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.client</span>;

  1085. 

  1086. 

  1087. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.configuration.DirectoryWebClientProperties</span>;

  1088. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.domain.Directory</span>;

  1089. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.domain.Person</span>;

  1090. <span class="keyword">import</span> <span class="include">org.springframework.core.ParameterizedTypeReference</span>;

  1091. <span class="keyword">import</span> <span class="include">org.springframework.hateoas.MediaTypes</span>;

  1092. <span class="keyword">import</span> <span class="include">org.springframework.hateoas.Resource</span>;

  1093. <span class="keyword">import</span> <span class="include">org.springframework.http.HttpStatus</span>;

  1094. <span class="keyword">import</span> <span class="include">org.springframework.http.RequestEntity</span>;

  1095. <span class="keyword">import</span> <span class="include">org.springframework.http.ResponseEntity</span>;

  1096. <span class="keyword">import</span> <span class="include">org.springframework.web.client.RestTemplate</span>;

  1097. 

  1098. <span class="keyword">import</span> <span class="include">java.util.Collection</span>;

  1099. <span class="keyword">import</span> <span class="include">java.util.Collections</span>;

  1100. 

  1101. <span class="keyword">import</span> <span class="include">static</span> <span class="include">java.net.URI.create</span>;

  1102. 

  1103. <span class="directive">public</span> <span class="type">class</span> <span class="class">DirectoryWebClient</span> {

  1104. 

  1105. 

  1106.     <span class="directive">private</span> RestTemplate restTemplate;

  1107.     <span class="directive">private</span> DirectoryWebClientProperties props;

  1108. 

  1109.     <span class="directive">public</span> DirectoryWebClient(RestTemplate restTemplate, DirectoryWebClientProperties props){

  1110.         <span class="local-variable">this</span>.restTemplate = restTemplate;

  1111.         <span class="local-variable">this</span>.props = props;

  1112.     }

  1113. 

  1114.     <span class="directive">public</span> Person add(Person person){

  1115.         ResponseEntity&lt;Resource&lt;Person&gt;&gt; response =

  1116.                 <span class="local-variable">this</span>.restTemplate.exchange(

  1117.                         RequestEntity.post(

  1118.                             create(<span class="local-variable">this</span>.props.getUri()))

  1119.                             .body(person)

  1120.                         ,<span class="keyword">new</span> ParameterizedTypeReference&lt;Resource&lt;Person&gt;&gt;() {});

  1121. 

  1122.         <span class="keyword">return</span> response.getBody().getContent();

  1123.     }

  1124. 

  1125.     <span class="directive">public</span> <span class="predefined-type">Collection</span>&lt;Person&gt; getAll() {

  1126. 

  1127.         ResponseEntity&lt;Resource&lt;Directory&gt;&gt; responseEntity =

  1128.                 <span class="local-variable">this</span>.restTemplate.exchange(RequestEntity.get(create(<span class="local-variable">this</span>.props.getUri()))

  1129.                         .accept(MediaTypes.HAL_JSON)

  1130.                         .build(),<span class="keyword">new</span> ParameterizedTypeReference&lt;Resource&lt;Directory&gt;&gt;() {});

  1131. 

  1132.         <span class="keyword">if</span>(responseEntity.getStatusCode() == HttpStatus.OK) {

  1133.             Directory company = responseEntity.getBody().getContent();

  1134.             <span class="keyword">return</span> company.getEmbedded().getPersons();

  1135.         }<span class="keyword">else</span>

  1136.             <span class="keyword">return</span> <span class="predefined-type">Collections</span>.emptyList();

  1137.     }

  1138. 

  1139. }</code></pre>

  1140. </div>

  1141. </div>

  1142. <div class="paragraph">

  1143. <p>See that it has (for now) two methods. To add a new person object to the directory and get all the persons in the directory. As you can see, is using a <strong>Directoy</strong> and <strong>Person</strong> domain classes.</p>

  1144. </div>

  1145. </li>

  1146. <li>

  1147. <p>Create the necessary domains, the <strong>io.pivotal.workshop.directory.domain.Directory</strong> and <strong>io.pivotal.workshop.directory.domain.Person</strong> classes, you can copy the <strong>Person</strong> class from the <strong>directory-web-security</strong> app, without the <strong>JPA</strong> annotations:</p>

  1148. <div class="listingblock">

  1149. <div class="title">src/main/java/io/pivotal/workshop/directory/domain/Directory.java</div>

  1150. <div class="content">

  1151. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.domain</span>;

  1152. 

  1153. <span class="keyword">import</span> <span class="include">com.fasterxml.jackson.annotation.JsonIgnoreProperties</span>;

  1154. <span class="keyword">import</span> <span class="include">com.fasterxml.jackson.annotation.JsonProperty</span>;

  1155. <span class="keyword">import</span> <span class="include">lombok.Data</span>;

  1156. 

  1157. <span class="keyword">import</span> <span class="include">java.util.List</span>;

  1158. 

  1159. <span class="annotation">@Data</span>

  1160. <span class="annotation">@JsonIgnoreProperties</span>(ignoreUnknown = <span class="predefined-constant">true</span>)

  1161. <span class="directive">public</span> <span class="type">class</span> <span class="class">Directory</span> {

  1162. 

  1163.     <span class="annotation">@JsonProperty</span>(<span class="string"><span class="delimiter">&quot;</span><span class="content">_embedded</span><span class="delimiter">&quot;</span></span>)

  1164.     <span class="directive">public</span> Embedded embedded;

  1165. 

  1166.     <span class="annotation">@Data</span>

  1167.     <span class="directive">public</span> <span class="type">class</span> <span class="class">Embedded</span> {

  1168. 

  1169.         <span class="directive">public</span> <span class="predefined-type">List</span>&lt;Person&gt; persons;

  1170. 

  1171.     }

  1172. }</code></pre>

  1173. </div>

  1174. </div>

  1175. <div class="listingblock">

  1176. <div class="title">src/main/java/io/pivotal/workshop/directory/domain/Person.java</div>

  1177. <div class="content">

  1178. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.domain</span>;

  1179. 

  1180. 

  1181. <span class="keyword">import</span> <span class="include">com.fasterxml.jackson.annotation.JsonIgnoreProperties</span>;

  1182. <span class="keyword">import</span> <span class="include">com.fasterxml.jackson.annotation.JsonProperty</span>;

  1183. <span class="keyword">import</span> <span class="include">lombok.AllArgsConstructor</span>;

  1184. <span class="keyword">import</span> <span class="include">lombok.Data</span>;

  1185. <span class="keyword">import</span> <span class="include">lombok.NoArgsConstructor</span>;

  1186. 

  1187. <span class="keyword">import</span> <span class="include">java.text.ParseException</span>;

  1188. <span class="keyword">import</span> <span class="include">java.text.SimpleDateFormat</span>;

  1189. <span class="keyword">import</span> <span class="include">java.util.Date</span>;

  1190. 

  1191. <span class="annotation">@JsonIgnoreProperties</span>(ignoreUnknown = <span class="predefined-constant">true</span>)

  1192. <span class="directive">public</span> <span class="type">class</span> <span class="class">Person</span> {

  1193. 

  1194. 

  1195.     <span class="directive">private</span> <span class="predefined-type">SimpleDateFormat</span> date = <span class="keyword">new</span> <span class="predefined-type">SimpleDateFormat</span>(<span class="string"><span class="delimiter">&quot;</span><span class="content">yyyy-MM-dd</span><span class="delimiter">&quot;</span></span>);

  1196. 

  1197.     <span class="directive">private</span> <span class="predefined-type">String</span> id;

  1198.     <span class="directive">private</span> <span class="predefined-type">String</span> email;

  1199.     <span class="directive">private</span> <span class="predefined-type">String</span> name;

  1200.     <span class="directive">private</span> <span class="predefined-type">String</span> password;

  1201.     <span class="directive">private</span> <span class="predefined-type">String</span> role = <span class="string"><span class="delimiter">&quot;</span><span class="content">USER</span><span class="delimiter">&quot;</span></span>;

  1202.     <span class="directive">private</span> <span class="type">boolean</span> enabled = <span class="predefined-constant">true</span>;

  1203.     <span class="directive">private</span> <span class="predefined-type">Date</span> birthday;

  1204.     <span class="directive">private</span> <span class="predefined-type">Date</span> created;

  1205.     <span class="directive">private</span> <span class="predefined-type">Date</span> modified;

  1206. 

  1207.     <span class="directive">public</span> Person() {

  1208.         <span class="local-variable">this</span>.created = <span class="keyword">new</span> <span class="predefined-type">Date</span>();

  1209.         <span class="local-variable">this</span>.modified = <span class="keyword">new</span> <span class="predefined-type">Date</span>();

  1210.     }

  1211. 

  1212.     <span class="directive">public</span> Person(<span class="predefined-type">String</span> email, <span class="predefined-type">String</span> name, <span class="predefined-type">String</span> password, <span class="predefined-type">String</span> birthday) {

  1213.         <span class="local-variable">this</span>();

  1214.         <span class="local-variable">this</span>.email = email;

  1215.         <span class="local-variable">this</span>.name = name;

  1216.         <span class="local-variable">this</span>.password = password;

  1217. 

  1218.         <span class="keyword">try</span> {

  1219.             <span class="local-variable">this</span>.birthday = date.parse(birthday);

  1220.         } <span class="keyword">catch</span> (<span class="exception">ParseException</span> e) {

  1221.             <span class="local-variable">this</span>.birthday = <span class="predefined-constant">null</span>;

  1222.         }

  1223.     }

  1224. 

  1225.     <span class="directive">public</span> Person(<span class="predefined-type">String</span> email, <span class="predefined-type">String</span> name, <span class="predefined-type">String</span> password, <span class="predefined-type">Date</span> birthday) {

  1226.         <span class="local-variable">this</span>();

  1227.         <span class="local-variable">this</span>.email = email;

  1228.         <span class="local-variable">this</span>.name = name;

  1229.         <span class="local-variable">this</span>.password = password;

  1230.         <span class="local-variable">this</span>.birthday = birthday;

  1231.     }

  1232. 

  1233.     <span class="directive">public</span> Person(<span class="predefined-type">String</span> email, <span class="predefined-type">String</span> name, <span class="predefined-type">String</span> password, <span class="predefined-type">String</span> birthday, <span class="predefined-type">String</span> role, <span class="type">boolean</span> enabled) {

  1234.         <span class="local-variable">this</span>(email, name, password, birthday);

  1235.         <span class="local-variable">this</span>.role = role;

  1236.         <span class="local-variable">this</span>.enabled = enabled;

  1237.     }

  1238. 

  1239.     <span class="directive">public</span> <span class="predefined-type">String</span> getId() {

  1240.         <span class="keyword">return</span> id;

  1241.     }

  1242. 

  1243.     <span class="directive">public</span> <span class="type">void</span> setId(<span class="predefined-type">String</span> id) {

  1244.         <span class="local-variable">this</span>.id = id;

  1245.     }

  1246. 

  1247.     <span class="directive">public</span> <span class="predefined-type">String</span> getEmail() {

  1248.         <span class="keyword">return</span> email;

  1249.     }

  1250. 

  1251.     <span class="directive">public</span> <span class="type">void</span> setEmail(<span class="predefined-type">String</span> email) {

  1252.         <span class="local-variable">this</span>.email = email;

  1253.     }

  1254. 

  1255.     <span class="directive">public</span> <span class="predefined-type">String</span> getName() {

  1256.         <span class="keyword">return</span> name;

  1257.     }

  1258. 

  1259.     <span class="directive">public</span> <span class="type">void</span> setName(<span class="predefined-type">String</span> name) {

  1260.         <span class="local-variable">this</span>.name = name;

  1261.     }

  1262. 

  1263.     <span class="directive">public</span> <span class="predefined-type">String</span> getPassword() {

  1264.         <span class="keyword">return</span> password;

  1265.     }

  1266. 

  1267.     <span class="directive">public</span> <span class="type">void</span> setPassword(<span class="predefined-type">String</span> password) {

  1268.         <span class="local-variable">this</span>.password = password;

  1269.     }

  1270. 

  1271.     <span class="directive">public</span> <span class="predefined-type">Date</span> getBirthday() {

  1272.         <span class="keyword">return</span> birthday;

  1273.     }

  1274. 

  1275.     <span class="directive">public</span> <span class="type">void</span> setBirthday(<span class="predefined-type">Date</span> birthday) {

  1276.         <span class="local-variable">this</span>.birthday = birthday;

  1277.     }

  1278. 

  1279.     <span class="directive">public</span> <span class="predefined-type">Date</span> getCreated() {

  1280.         <span class="keyword">return</span> created;

  1281.     }

  1282. 

  1283.     <span class="directive">public</span> <span class="predefined-type">Date</span> getModified() {

  1284.         <span class="keyword">return</span> modified;

  1285.     }

  1286. 

  1287.     <span class="directive">public</span> <span class="predefined-type">String</span> getRole() {

  1288.         <span class="keyword">return</span> role;

  1289.     }

  1290. 

  1291.     <span class="directive">public</span> <span class="type">void</span> setRole(<span class="predefined-type">String</span> role) {

  1292.         <span class="local-variable">this</span>.role = role;

  1293.     }

  1294. 

  1295.     <span class="directive">public</span> <span class="type">boolean</span> isEnabled() {

  1296.         <span class="keyword">return</span> enabled;

  1297.     }

  1298. 

  1299.     <span class="directive">public</span> <span class="type">void</span> setEnabled(<span class="type">boolean</span> enabled) {

  1300.         <span class="local-variable">this</span>.enabled = enabled;

  1301.     }

  1302. 

  1303.     <span class="annotation">@Override</span>

  1304.     <span class="directive">public</span> <span class="predefined-type">String</span> toString() {

  1305.         <span class="keyword">return</span> <span class="string"><span class="delimiter">&quot;</span><span class="content">Person{</span><span class="delimiter">&quot;</span></span> +

  1306.                 <span class="string"><span class="delimiter">&quot;</span><span class="content">id='</span><span class="delimiter">&quot;</span></span> + id + <span class="string"><span class="delimiter">'</span><span class="char">\'</span><span class="delimiter">'</span></span> +

  1307.                 <span class="string"><span class="delimiter">&quot;</span><span class="content">, email='</span><span class="delimiter">&quot;</span></span> + email + <span class="string"><span class="delimiter">'</span><span class="char">\'</span><span class="delimiter">'</span></span> +

  1308.                 <span class="string"><span class="delimiter">&quot;</span><span class="content">, name='</span><span class="delimiter">&quot;</span></span> + name + <span class="string"><span class="delimiter">'</span><span class="char">\'</span><span class="delimiter">'</span></span> +

  1309.                 <span class="string"><span class="delimiter">&quot;</span><span class="content">, password='</span><span class="delimiter">&quot;</span></span> + password + <span class="string"><span class="delimiter">'</span><span class="char">\'</span><span class="delimiter">'</span></span> +

  1310.                 <span class="string"><span class="delimiter">&quot;</span><span class="content">, role='</span><span class="delimiter">&quot;</span></span> + role + <span class="string"><span class="delimiter">'</span><span class="char">\'</span><span class="delimiter">'</span></span> +

  1311.                 <span class="string"><span class="delimiter">&quot;</span><span class="content">, enabled=</span><span class="delimiter">&quot;</span></span> + enabled +

  1312.                 <span class="string"><span class="delimiter">&quot;</span><span class="content">, birthday=</span><span class="delimiter">&quot;</span></span> + birthday +

  1313.                 <span class="string"><span class="delimiter">&quot;</span><span class="content">, date=</span><span class="delimiter">&quot;</span></span> + date +

  1314.                 <span class="string"><span class="delimiter">&quot;</span><span class="content">, created=</span><span class="delimiter">&quot;</span></span> + created +

  1315.                 <span class="string"><span class="delimiter">&quot;</span><span class="content">, modified=</span><span class="delimiter">&quot;</span></span> + modified +

  1316.                 <span class="string"><span class="delimiter">'</span><span class="content">}</span><span class="delimiter">'</span></span>;

  1317.     }

  1318. }</code></pre>

  1319. </div>

  1320. </div>

  1321. </li>

  1322. <li>

  1323. <p>Lets add the next feature, the <strong>@EnableDirectoryWebClientUtils</strong> that will create a <strong>DirectoryWebClientUtils</strong> bean depending of what algorithm was declared. Add the custom annotation <strong>io.pivotal.workshop.directory.annotation.EnableDirectoryWebClientUtils</strong> class and its dependency, the <strong>io.pivotal.workshop.directory.annotation.Algorithm</strong> enum:</p>

  1324. <div class="listingblock">

  1325. <div class="title">src/main/java/io/pivotal/workshop/directory/annotation/EnableDirectoryWebClientUtils.java</div>

  1326. <div class="content">

  1327. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.annotation</span>;

  1328. 

  1329. 

  1330. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.utils.DirectoryWebClientUtilsConfiguration</span>;

  1331. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.Import</span>;

  1332. 

  1333. <span class="keyword">import</span> <span class="include">java.lang.annotation.ElementType</span>;

  1334. <span class="keyword">import</span> <span class="include">java.lang.annotation.Retention</span>;

  1335. <span class="keyword">import</span> <span class="include">java.lang.annotation.RetentionPolicy</span>;

  1336. <span class="keyword">import</span> <span class="include">java.lang.annotation.Target</span>;

  1337. 

  1338. <span class="annotation">@Retention</span>(<span class="predefined-type">RetentionPolicy</span>.RUNTIME)

  1339. <span class="annotation">@Target</span>(<span class="predefined-type">ElementType</span>.TYPE)

  1340. <span class="annotation">@Import</span>(DirectoryWebClientUtilsConfiguration.class)

  1341. <span class="directive">public</span> <span class="annotation">@interface</span> EnableDirectoryWebClientUtils {

  1342.     Algorithm algorithm() <span class="keyword">default</span> Algorithm.BCRYPT;

  1343. }</code></pre>

  1344. </div>

  1345. </div>

  1346. <div class="listingblock">

  1347. <div class="title">src/main/java/io/pivotal/workshop/directory/annotation/Algorithm.java</div>

  1348. <div class="content">

  1349. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.annotation</span>;

  1350. 

  1351. <span class="directive">public</span> <span class="type">enum</span> Algorithm {

  1352.     BCRYPT, PBKDF2

  1353. }</code></pre>

  1354. </div>

  1355. </div>

  1356. </li>

  1357. <li>

  1358. <p>Next let&#8217;s create the configuration needed to create the <strong>DirectoryWebClientUtils</strong> bean. Create the <strong>io.pivotal.workshop.directory.utils.DirectoryWebClientUtilsConfiguration</strong> class. This class will implement the <strong>ImportSelector</strong> interface that will be picked up by <strong>Spring Boot</strong> during the <strong>auto-configuration</strong>. It will identify if the <strong>@EnableDirectoryWebClientUtils</strong> was declared in a <strong>@Configuration</strong> class and it will create the necessary beans.</p>

  1359. <div class="listingblock">

  1360. <div class="title">src/main/java/io/pivotal/workshop/directory/utils/DirectoryWebClientUtilsConfiguration.java</div>

  1361. <div class="content">

  1362. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.utils</span>;

  1363. 

  1364. 

  1365. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.annotation.Algorithm</span>;

  1366. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.annotation.EnableDirectoryWebClientUtils</span>;

  1367. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.ImportSelector</span>;

  1368. <span class="keyword">import</span> <span class="include">org.springframework.core.annotation.AnnotationAttributes</span>;

  1369. <span class="keyword">import</span> <span class="include">org.springframework.core.type.AnnotationMetadata</span>;

  1370. 

  1371. <span class="directive">public</span> <span class="type">class</span> <span class="class">DirectoryWebClientUtilsConfiguration</span> <span class="directive">implements</span> ImportSelector {

  1372. 

  1373.     <span class="directive">public</span> <span class="predefined-type">String</span><span class="type">[]</span> selectImports(AnnotationMetadata annotationMetadata) {

  1374.         AnnotationAttributes attributes =

  1375.                 AnnotationAttributes.fromMap(

  1376.                         annotationMetadata.getAnnotationAttributes(EnableDirectoryWebClientUtils.class.getName(), <span class="predefined-constant">false</span>));

  1377.         Algorithm algorithm = attributes.getEnum(<span class="string"><span class="delimiter">&quot;</span><span class="content">algorithm</span><span class="delimiter">&quot;</span></span>);

  1378.         <span class="keyword">switch</span>(algorithm){

  1379.             <span class="keyword">case</span> PBKDF2:

  1380.                 <span class="keyword">return</span> <span class="keyword">new</span> <span class="predefined-type">String</span><span class="type">[]</span> {<span class="string"><span class="delimiter">&quot;</span><span class="content">io.pivotal.workshop.directory.utils.Pbkdf2Encoder</span><span class="delimiter">&quot;</span></span>};

  1381.             <span class="keyword">case</span> BCRYPT:

  1382.                 <span class="keyword">default</span>:

  1383.                 <span class="keyword">return</span> <span class="keyword">new</span> <span class="predefined-type">String</span><span class="type">[]</span> {<span class="string"><span class="delimiter">&quot;</span><span class="content">io.pivotal.workshop.directory.utils.BcryptEncoder</span><span class="delimiter">&quot;</span></span>};

  1384.         }

  1385.     }

  1386. }</code></pre>

  1387. </div>

  1388. </div>

  1389. <div class="paragraph">

  1390. <p>The <strong>DirectoryWebClientUtilsConfiguration</strong> will decide which class to configure based on the <strong>Algorithm</strong> selected.</p>

  1391. </div>

  1392. </li>

  1393. <li>

  1394. <p>Lets create the <strong>io.pivotal.workshop.directory.utils.BCryptEncoder</strong> and <strong>io.pivotal.workshop.directory.utils.Pbkdf2Encoder</strong> configuration classes. These classes will declare the <strong>DirectoryWebClientUtils</strong> bean and it will have the <strong>Algorithm</strong> selected.</p>

  1395. <div class="listingblock">

  1396. <div class="title">src/main/java/io/pivotal/workshop/directory/utils/BCryptEncoder.java</div>

  1397. <div class="content">

  1398. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.utils</span>;

  1399. 

  1400. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.Bean</span>;

  1401. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.Configuration</span>;

  1402. <span class="keyword">import</span> <span class="include">org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder</span>;

  1403. 

  1404. <span class="annotation">@Configuration</span>

  1405. <span class="directive">public</span> <span class="type">class</span> <span class="class">BCryptEncoder</span> {

  1406. 

  1407.     <span class="annotation">@Bean</span>

  1408.     <span class="directive">public</span> DirectoryWebClientUtils utils(){

  1409.         <span class="keyword">return</span> <span class="keyword">new</span> DirectoryWebClientUtils(<span class="keyword">new</span> BCryptPasswordEncoder(<span class="integer">16</span>));

  1410.     }

  1411. }</code></pre>

  1412. </div>

  1413. </div>

  1414. <div class="listingblock">

  1415. <div class="title">src/main/java/io/pivotal/workshop/directory/utils/Pbkdf2Encoder.java</div>

  1416. <div class="content">

  1417. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.utils</span>;

  1418. 

  1419. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.Bean</span>;

  1420. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.Configuration</span>;

  1421. <span class="keyword">import</span> <span class="include">org.springframework.security.crypto.password.Pbkdf2PasswordEncoder</span>;

  1422. 

  1423. <span class="annotation">@Configuration</span>

  1424. <span class="directive">public</span> <span class="type">class</span> <span class="class">Pbkdf2Encoder</span> {

  1425. 

  1426.     <span class="annotation">@Bean</span>

  1427.     <span class="directive">public</span> DirectoryWebClientUtils utils(){

  1428.         <span class="keyword">return</span> <span class="keyword">new</span> DirectoryWebClientUtils(<span class="keyword">new</span> Pbkdf2PasswordEncoder());

  1429.     }

  1430. }</code></pre>

  1431. </div>

  1432. </div>

  1433. </li>

  1434. <li>

  1435. <p>Next, create the <strong>io.pivotal.workshop.directory.utils.DirectoryWebClientUtils</strong> class that will be the bean created based on the <strong>Algorithm</strong> selected:</p>

  1436. <div class="listingblock">

  1437. <div class="title">src/main/java/io/pivotal/workshop/directory/utils/DirectoryWebClientUtils.java</div>

  1438. <div class="content">

  1439. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop.directory.utils</span>;

  1440. 

  1441. <span class="keyword">import</span> <span class="include">lombok.Data</span>;

  1442. <span class="keyword">import</span> <span class="include">org.springframework.security.crypto.password.PasswordEncoder</span>;

  1443. 

  1444. 

  1445. <span class="annotation">@Data</span>

  1446. <span class="directive">public</span> <span class="type">class</span> <span class="class">DirectoryWebClientUtils</span> {

  1447. 

  1448.     <span class="directive">private</span> PasswordEncoder encoder;

  1449. 

  1450.     <span class="directive">public</span> DirectoryWebClientUtils(PasswordEncoder encoder){

  1451.         <span class="local-variable">this</span>.encoder = encoder;

  1452.     }

  1453. 

  1454. }</code></pre>

  1455. </div>

  1456. </div>

  1457. </li>

  1458. </ol>

  1459. </div>

  1460. </div>

  1461. </div>

  1462. <div class="sect1">

  1463. <h2 id="_demo_starter">Demo Starter</h2>

  1464. <div class="sectionbody">

  1465. <div class="paragraph">

  1466. <p>This project will test the custom spring-boot-starter.</p>

  1467. </div>

  1468. <div class="olist arabic">

  1469. <ol class="arabic">

  1470. <li>

  1471. <p>Open a browser and hit the url: <a href="http://start.spring.io" class="bare" target="_blank">http://start.spring.io</a></p>

  1472. </li>

  1473. <li>

  1474. <p>Click the <strong><em>Switch to the full version</em></strong> link.</p>

  1475. </li>

  1476. <li>

  1477. <p>Fill out the Demo Starter Project metadata with (See Figure 1.0):</p>

  1478. <table class="tableblock frame-all grid-all spread">

  1479. <caption class="title">Table 2. Demo Starter - metadata</caption>

  1480. <colgroup>

  1481. <col style="width: 16.6666%;">

  1482. <col style="width: 83.3334%;">

  1483. </colgroup>

  1484. <thead>

  1485. <tr>

  1486. <th class="tableblock halign-left valign-top">Property</th>

  1487. <th class="tableblock halign-left valign-top">Value</th>

  1488. </tr>

  1489. </thead>

  1490. <tbody>

  1491. <tr>

  1492. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Group</strong>:</p></td>

  1493. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>io.pivotal.workshop</em></p></td>

  1494. </tr>

  1495. <tr>

  1496. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Artifact</strong>:</p></td>

  1497. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>demo-starter</em></p></td>

  1498. </tr>

  1499. <tr>

  1500. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Name</strong>:</p></td>

  1501. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>demo-starter</em></p></td>

  1502. </tr>

  1503. <tr>

  1504. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Package Name</strong>:</p></td>

  1505. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>io.pivotal.workshop</em></p></td>

  1506. </tr>

  1507. <tr>

  1508. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Project Type</strong>:</p></td>

  1509. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>Maven</em></p></td>

  1510. </tr>

  1511. <tr>

  1512. <td class="tableblock halign-left valign-top"><p class="tableblock"><strong>Spring Boot</strong>:</p></td>

  1513. <td class="tableblock halign-left valign-top"><p class="tableblock"><em>2.0.0.M7</em></p></td>

  1514. </tr>

  1515. </tbody>

  1516. </table>

  1517. <div class="paragraph">

  1518. <div class="title">Figure 1.0: Spring Initializr - <a href="http://start.spring.io" class="bare" target="_blank">http://start.spring.io</a></div>

  1519. <p><span class="image"><img src="images/14-spring-boot-extending-02.png" alt="SpringInitializr" title="Spring Initializr"></span></p>

  1520. </div>

  1521. </li>

  1522. <li>

  1523. <p>This is just a simple <strong>Spring Boot</strong> app, without any additional <strong><em>Dependencies</em></strong>  from the <strong>Spring Initializr</strong>.</p>

  1524. </li>

  1525. <li>

  1526. <p>Click the <strong><em>Generate Project</em></strong> button.</p>

  1527. </li>

  1528. <li>

  1529. <p><strong>IMPORTANT</strong> Unzip the file in any directory you want and <strong>COPY the content</strong> in the <strong>workspace/demo-starter</strong> directory.</p>

  1530. </li>

  1531. <li>

  1532. <p>Import the project into your favorite IDE.</p>

  1533. </li>

  1534. <li>

  1535. <p>Add the <strong>directory-web-client-spring-boot-starter</strong> dependency to your <strong>pom.xml</strong>:</p>

  1536. <div class="listingblock">

  1537. <div class="content">

  1538. <pre class="CodeRay highlight"><code data-lang="xml"><span class="tag">&lt;dependency&gt;</span>

  1539.     <span class="tag">&lt;groupId&gt;</span>io.pivotal.workshop<span class="tag">&lt;/groupId&gt;</span>

  1540.     <span class="tag">&lt;artifactId&gt;</span>directory-web-client-spring-boot-starter<span class="tag">&lt;/artifactId&gt;</span>

  1541.     <span class="tag">&lt;version&gt;</span>0.0.1-SNAPSHOT<span class="tag">&lt;/version&gt;</span>

  1542. <span class="tag">&lt;/dependency&gt;</span></code></pre>

  1543. </div>

  1544. </div>

  1545. </li>

  1546. <li>

  1547. <p>In the <strong>src/main/resources/application.properties</strong> file add the following properties:</p>

  1548. <div class="listingblock">

  1549. <div class="content">

  1550. <pre class="CodeRay highlight"><code data-lang="properties">directory.web.client.username=admin

  1551. directory.web.client.password=admin

  1552. directory.web.client.uri=http://localhost:8585/api/persons</code></pre>

  1553. </div>

  1554. </div>

  1555. <div class="paragraph">

  1556. <p>These are the defaul values, but this give us more flexibility if the <strong>directory-web-security</strong> app has different credentials or is running in a different port.</p>

  1557. </div>

  1558. </li>

  1559. <li>

  1560. <p>Next, we are ready to start testing. Make sure you have the <strong>directory-web-security</strong> running in the port <strong>8585</strong>.</p>

  1561. </li>

  1562. </ol>

  1563. </div>

  1564. <div class="sect2">

  1565. <h3 id="_testing_the_strong_directorywebclient_strong_bean">Testing the <strong>DirectoryWebClient</strong> bean</h3>

  1566. <div class="olist arabic">

  1567. <ol class="arabic">

  1568. <li>

  1569. <p>In your <strong>demo-starter</strong> project open the <strong>DemoStarterApplication</strong> class and add the following code:</p>

  1570. <div class="listingblock">

  1571. <div class="content">

  1572. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop</span>;

  1573. 

  1574. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.client.DirectoryWebClient</span>;

  1575. <span class="keyword">import</span> <span class="include">org.springframework.boot.ApplicationRunner</span>;

  1576. <span class="keyword">import</span> <span class="include">org.springframework.boot.SpringApplication</span>;

  1577. <span class="keyword">import</span> <span class="include">org.springframework.boot.autoconfigure.SpringBootApplication</span>;

  1578. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.Bean</span>;

  1579. 

  1580. <span class="annotation">@SpringBootApplication</span>

  1581. <span class="directive">public</span> <span class="type">class</span> <span class="class">DemoStarterApplication</span> {

  1582. 

  1583.         <span class="directive">public</span> <span class="directive">static</span> <span class="type">void</span> main(<span class="predefined-type">String</span><span class="type">[]</span> args) {

  1584.                 SpringApplication.run(DemoStarterApplication.class, args);

  1585.         }

  1586. 

  1587.         <span class="annotation">@Bean</span>

  1588.         ApplicationRunner getPersons(DirectoryWebClient client){

  1589.                 <span class="keyword">return</span> args -&gt; {

  1590.                         client.getAll().forEach(<span class="predefined-type">System</span>.out::println);

  1591.                 };

  1592.         }

  1593. 

  1594. }</code></pre>

  1595. </div>

  1596. </div>

  1597. <div class="paragraph">

  1598. <p>In the above code we are using the <strong>DirectoryWebClient</strong> client and calling the <strong>getAll()</strong> method.</p>

  1599. </div>

  1600. </li>

  1601. <li>

  1602. <p>Run the application and you should see all the persons that are in the <strong>directory-web-security</strong> app.</p>

  1603. </li>

  1604. </ol>

  1605. </div>

  1606. <div class="admonitionblock tip">

  1607. <table>

  1608. <tr>

  1609. <td class="icon">

  1610. <div class="title">Tip</div>

  1611. </td>

  1612. <td class="content">

  1613. If you are using the command: <code>./mvnw spring-boot:run</code> remember that you need to do a: <code>./mvnw install</code> in the root folder (<strong><em>workspace</em></strong>), so the <strong>directory-web-client-spring-boot-starter</strong> and its dependencies get installed so they can be used.

  1614. </td>

  1615. </tr>

  1616. </table>

  1617. </div>

  1618. </div>

  1619. <div class="sect2">

  1620. <h3 id="_testing_the_strong_enabledirectorywebclientutils_strong_annotation">Testing the <strong>@EnableDirectoryWebClientUtils</strong> annotation.</h3>

  1621. <div class="olist arabic">

  1622. <ol class="arabic">

  1623. <li>

  1624. <p>In your <strong>demo-starter</strong> project open the <strong>DemoStarterApplication</strong> class and add the following code:</p>

  1625. <div class="listingblock">

  1626. <div class="content">

  1627. <pre class="CodeRay highlight"><code data-lang="java"><span class="keyword">package</span> <span class="namespace">io.pivotal.workshop</span>;

  1628. 

  1629. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.annotation.Algorithm</span>;

  1630. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.annotation.EnableDirectoryWebClientUtils</span>;

  1631. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.client.DirectoryWebClient</span>;

  1632. <span class="keyword">import</span> <span class="include">io.pivotal.workshop.directory.utils.DirectoryWebClientUtils</span>;

  1633. <span class="keyword">import</span> <span class="include">org.springframework.boot.ApplicationRunner</span>;

  1634. <span class="keyword">import</span> <span class="include">org.springframework.boot.SpringApplication</span>;

  1635. <span class="keyword">import</span> <span class="include">org.springframework.boot.autoconfigure.SpringBootApplication</span>;

  1636. <span class="keyword">import</span> <span class="include">org.springframework.context.annotation.Bean</span>;

  1637. 

  1638. <span class="annotation">@EnableDirectoryWebClientUtils</span>(algorithm = Algorithm.PBKDF2)

  1639. <span class="annotation">@SpringBootApplication</span>

  1640. <span class="directive">public</span> <span class="type">class</span> <span class="class">DemoStarterApplication</span> {

  1641. 

  1642.         <span class="directive">public</span> <span class="directive">static</span> <span class="type">void</span> main(<span class="predefined-type">String</span><span class="type">[]</span> args) {

  1643.                 SpringApplication.run(DemoStarterApplication.class, args);

  1644.         }

  1645. 

  1646.         <span class="annotation">@Bean</span>

  1647.         ApplicationRunner getPersons(DirectoryWebClient client){

  1648.                 <span class="keyword">return</span> args -&gt; {

  1649.                         client.getAll().forEach(<span class="predefined-type">System</span>.out::println);

  1650.                 };

  1651.         }

  1652. 

  1653.         <span class="annotation">@Bean</span>

  1654.         ApplicationRunner encode(DirectoryWebClientUtils utils){

  1655.                 <span class="keyword">return</span> args -&gt; {

  1656.                     <span class="predefined-type">String</span> text = <span class="string"><span class="delimiter">&quot;</span><span class="content">This text will be encrypted</span><span class="delimiter">&quot;</span></span>;

  1657.                         <span class="predefined-type">String</span> hash = utils.getEncoder().encode(text);

  1658.                         <span class="predefined-type">System</span>.out.println(<span class="string"><span class="delimiter">&quot;</span><span class="content">&gt;&gt;&gt; ENCRYPT: </span><span class="delimiter">&quot;</span></span> + hash);

  1659.                         <span class="predefined-type">System</span>.out.println(<span class="string"><span class="delimiter">&quot;</span><span class="content">&gt;&gt;&gt; Verify: </span><span class="delimiter">&quot;</span></span> + utils.getEncoder().matches(text,hash));

  1660.                 };

  1661.         }

  1662. 

  1663. }</code></pre>

  1664. </div>

  1665. </div>

  1666. </li>

  1667. <li>

  1668. <p>Run the application and you will see the encrypted text.</p>

  1669. </li>

  1670. </ol>

  1671. </div>

  1672. <div class="paragraph">

  1673. <p><strong>CONGRATS!</strong> you have created your first custom <strong>spring-boot-starter</strong></p>

  1674. </div>

  1675. </div>

  1676. </div>

  1677. </div>

  1678. <div class="sect1">

  1679. <h2 id="_challenges">Challenges</h2>

  1680. <div class="sectionbody">

  1681. <div class="olist arabic">

  1682. <ol class="arabic">

  1683. <li>

  1684. <p>Comment out the <strong>@EnableDirectoryWebClientUtils</strong>, run the app again and see how the it fails because is looking for the <strong>DirectoryWebClientUtils</strong> bean. That&#8217;s the power of creating a <strong>@Enable</strong>* technology.</p>

  1685. </li>

  1686. <li>

  1687. <p>Add the code to add a new person using the <strong>DirectoryWebClient</strong> bean.</p>

  1688. </li>

  1689. </ol>

  1690. </div>

  1691. </div>

  1692. </div>

  1693. <div class="sect1">

  1694. <h2 id="_homework">HOMEWORK</h2>

  1695. <div class="sectionbody">

  1696. <div class="olist arabic">

  1697. <ol class="arabic">

  1698. <li>

  1699. <p>Create a Web app that has the <strong>CRUD</strong> (Create, Read, Up, Delete) Forms for all these actions. It will use the <strong>directory-web-client-spring-boot-starter</strong>:</p>

  1700. <div class="ulist">

  1701. <ul>

  1702. <li>

  1703. <p>It will encrypt the user password (TIP: You can use the <strong>DirectoryWebClientUtils</strong> bean)</p>

  1704. </li>

  1705. <li>

  1706. <p>Add all the missing logic for Update, Delete, etc to the <strong>directory-web-client-spring-boot-autoconfigure</strong> so it can be more reusable for this new web app.</p>

  1707. </li>

  1708. </ul>

  1709. </div>

  1710. </li>

  1711. </ol>

  1712. </div>

  1713. </div>

  1714. </div>

  1715. </div>

  1716. <div id="footer">

  1717. <div id="footer-text">

  1718. Last updated 2017-11-28 17:39:36 PST

  1719. </div>

  1720. </div>

  1721. </body>

  1722. </html>